.tu{
    -webkit-background-size: 100% 100%;
    background-size: 100% 100%; // height: 100%;
    
    width: 100%;
    height: 100%;
    background-image: url('../../assets/zutaitu104.png');
    background-repeat: no-repeat;
    background-position: center;
}
.tu1{
    -webkit-background-size: 100% 100%;
    background-size: 100% 100%; // height: 100%;
    
    width: 100%;
    height: 100%;
    background-image: url('../../assets/zutaitu101.png');
    background-repeat: no-repeat;
    background-position: center;
}
.tu5{
    -webkit-background-size: 100% 100%;
    background-size: 100% 100%; // height: 100%;
    
    width: 100%;
    height: 100%;
    background-image: url('../../assets/zutaiwuni5.png');
    background-repeat: no-repeat;
    background-position: center;
}
.tu6{
    -webkit-background-size: 100% 100%;
    background-size: 100% 100%; // height: 100%;
    
    width: 100%;
    height: 100%;
    background-image: url('../../assets/zutaiwuni6.png');
    background-repeat: no-repeat;
    background-position: center;
}